Collaborative Research: Using Stable Isotopes to Constrain the Atmospheric Carbon Monoxide Budget over the Last 20,000 Years

合作研究：使用稳定同位素限制过去 20,000 年大气一氧化碳预算

• 批准号: 1443482
• 负责人: John Mak
• 金额: $ 20.99万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-03-15 至 2019-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1443482&HistoricalAwards=false
• 关键词: Collaborative; Research; Using; Stable; Isotopes

Mak/1443482This project will compare current atmospheric conditions with those of the remote past prior to human influence. This is important in order to understand the impact of human activities on Earth's atmosphere, and to determine the stability of the composition of the atmosphere in the past. How humans have impacted Earth?s atmospheric composition is important for developing accurate predictions of future global atmospheric conditions. In addition to training students, the investigators will support continuing education of high school science teachers on Long Island through specifically tailored, interactive seminars on various topics in earth science, atmospheric sciences, physics and biology. A pilot program at Mount Sinai School District, near Stony Brook University will be the first implementation of this program.The investigators plan to reconstruct historical variations in the sources of atmospheric carbon monoxide (CO) from measurements of the concentration and stable isotopic abundance of carbon monoxide ([CO], 13CO and C18O) in the South Pole Ice Core, which is being drilled in 2014-2016. The goal is to strategically sample and reconstruct the relative variations in CO source strengths over the past 20,000 years. These will be the first measurements to extend the CO record beyond 650 years before present, back to the last glacial maximum. Both atmospheric chemical processes and variations in CO sources can impact the CO budget, and variations in the CO budget are useful in identifying and quantifying chemistry-climate interactions.

Mak/1443482本项目将比较当前的大气条件与人类影响之前的遥远过去的大气条件。这对于了解人类活动对地球大气层的影响以及确定过去大气层组成的稳定性非常重要。人类如何影响地球？的大气成分是重要的发展未来全球大气条件的准确预测。除了培训学生外，调查人员还将通过专门针对地球科学、大气科学、物理学和生物学等各种主题的互动研讨会，支持长岛高中科学教师的继续教育。在斯托尼布鲁克大学附近的西奈山学区的一个试点项目将是该项目的第一个实施。研究人员计划通过测量南极冰芯中一氧化碳（[CO]，13 CO和C18 O）的浓度和稳定同位素丰度来重建大气一氧化碳（CO）来源的历史变化，该冰芯将于2014-2016年钻探。其目标是战略性地采样和重建过去20，000年来CO源强度的相对变化。这将是第一次测量，以延长CO记录超过650年前，现在，回到最后一次冰期最大。大气化学过程和CO源的变化都可以影响CO收支，CO收支的变化有助于确定和量化化学-气候相互作用。